Find the angle between the given vectors to the nearest tenth of a degree.a = 8i - 4j, b = 2i - 7j
A. 112.0°
B. 47.5°
C. 99.5°
D. 32.5°
Answer: B
Mathematics
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Solve the quadratic equation by completing the square.25x2 + 40x + 12 = 0
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find the derivative of y = 3(x3 - 4x2) by using the Product Rule and by using the Constant Multiple Rule. Show that your answers are equivalent.
What will be an ideal response?
Mathematics
Fill in the blank.
angle measures between 90° and 180°.
A. A right B. An obtuse C. A straight D. An acute
Mathematics
Solve the problem.On part of a scenic tour of underground caves, Jared and Benny started at an elevation of -32 feet. They then rose 17 feet. What was their elevation at this point? Represent the answer as an integer.
A. 15 ft B. 49 ft C. -49 ft D. -15 ft
Mathematics